Tome of Magic abbreviated ToM is a handbook of rules and guidelines for the Dungeons & Dragons role-playing game. As its name implies, it is a supplement to be used to expand the magical options available in the game. It was first released for Advanced Dungeons & Dragons, 2nd Edition

2nd Edition

The 2nd Edition Tome of Magic, published in 1991, was a book focused upon expanded options for members of the mage and cleric classes and their subclasses. It also introduced the concept of metamagic effects to D&D. The book was arranged in several sections, designed by David Cook, Nigel Findley, Anthony Herring, Christopher Kubasik, Carl Sargent, and Rick Swan. Cover art is by Jeff Easley, with interior illustrations by Stephen Fabian, Brom, Clyde Caldwell, Carol Heyer, John and Laura Lakey, and Roger Loveless.

This AD&D game hardcover includes 86 new wizard spells (plus rules for "wild mages"), 170 priest spells (plus eight new spheres), and 92 new magical items, all meant to fill minor gaps in the extant spell lists.

The first section presented new subclasses for the mage class, and new forms of spells and spellcasting for the cleric class, as well as several new spheres of divine magic. The mage subclasses were the wild mage and elementalist classes. The wild mage had the most in the way of new rules, including wild magic and wild surges, which result from his attempts to use magic in raw, barely controllable forms. Elementalists had to devote themselves to one of the four classical elements, barring them from using spells employing their oppositional element (fire vs. water, or air vs. earth, for example), but gaining increased power in exchange.

The cleric class gained access to quest spells, spells of such immense power that a cleric must be granted such a spell directly by his or her god. These spells require the cleric to go upon a quest to gain the right to cast it once, or petition their god to grant the spell to deal with an immediate crisis. Such spells might be used to end a famine or cure a plague, or to wound or slay large groups of enemies. 

The second section of the book presented many new spells for both clerics and wizards. Some of these spells were carried forward into 3rd Edition within the core rules, such as Abi-Dalzim's horrid wilting (with name changed to simply horrid wilting) and wail of the banshee. This is also the section that introduced metamagic effects, as spells that enhanced and augmented any spells cast while they were still in effect. In 3rd Edition, metamagic returned in the core rules through feats that enhanced spells cast using the feats.

The third and final section of the book was devoted to various new magic items, including several items that carried curses. These new items included the standard array of potions, rings, wands, worn items, and magic tools, but also introduced "aromatic oils," magic potions applied like perfume to produce their effect.